Pub Date : 2021-03-31DOI: 10.31258/JKFI.18.1.64-68
Rati Okta Della, Iwantono Iwantono
Dye sensitized solar cell (DSSC) is made with a layer arrangement of fluorine tin oxide (FTO), zinc oxide (ZnO), dye, electrolyte, and plastisol. ZnO nanorods which play a role as photoanode in DSSC have been successfully grown on FTO substrate using seed mediated hydrothermal method at temperature of 90 oC for 8 hours. Modification was made to increases the efficiency of DSSC by adding silver (Ag) with concentration of 5 mM into dye molecules. ZnO characterization was performed using ultra violet-vissible (UV-Vis) spectroscopy and field emission scanning electron microscopy (FESEM). The strongest UV-Vis absorbance spectrum with the optimum absorbance for the ZnO sampel was occurred at the wavelength range of 300 – 360 nm. Meanwhile, for the ZnO sample with addition of 5 mM Ag into dye molecule was occurred at the wavelength range of 440 – 530 nm. FESEM image of the sample shows the as-synthesized ZnO nanorods have hexagonal cross section. I-V characteristics in the light mode was carried out to determine the efficiency of DSSC using a halogen lamp with an intensity of 100 mW/cm 2 . The efficiency of DSSC using ZnO with addition of 5 mM Ag into dye molecule is 0.462%, increases compared to the efficiency of DSSC using ZnO without addition of Ag into dye molecule which only produce 0.45% efficiency. These results indicate that the addition of Ag can increase the efficiency of DSSC.
染料敏化太阳能电池(DSSC)是由氟氧化锡(FTO)、氧化锌(ZnO)、染料、电解质和塑料溶胶组成的一层排列结构。采用种子介导水热法在FTO衬底上90℃温度下生长8小时，成功制备了ZnO纳米棒作为DSSC的光阳极。在染料分子中加入浓度为5 mM的银(Ag)，对DSSC进行改性，提高其效率。采用紫外可见光谱(UV-Vis)和场发射扫描电镜(FESEM)对氧化锌进行了表征。在300 ~ 360 nm波长范围内，ZnO样品的紫外可见吸收光谱最强，吸光度最佳。同时，对于ZnO样品，在染料分子中加入5 mM Ag在440 ~ 530 nm波长范围内发生。样品的FESEM图像显示，合成的ZnO纳米棒具有六边形截面。使用强度为100 mW/ cm2的卤素灯进行光模式下的I-V特性，以确定DSSC的效率。在染料分子中加入5 mM Ag后，使用ZnO的DSSC效率为0.462%，比不加入Ag的使用ZnO的DSSC效率提高了0.45%。结果表明，Ag的加入可以提高DSSC的效率。
{"title":"PENGARUH PENAMBAHAN PERAK PADA MOLEKUL DYE TERHADAP EFISIENSI DYE SENSITIZED SOLAR CELL","authors":"Rati Okta Della, Iwantono Iwantono","doi":"10.31258/JKFI.18.1.64-68","DOIUrl":"https://doi.org/10.31258/JKFI.18.1.64-68","url":null,"abstract":"Dye sensitized solar cell (DSSC) is made with a layer arrangement of fluorine tin oxide (FTO), zinc oxide (ZnO), dye, electrolyte, and plastisol. ZnO nanorods which play a role as photoanode in DSSC have been successfully grown on FTO substrate using seed mediated hydrothermal method at temperature of 90 oC for 8 hours. Modification was made to increases the efficiency of DSSC by adding silver (Ag) with concentration of 5 mM into dye molecules. ZnO characterization was performed using ultra violet-vissible (UV-Vis) spectroscopy and field emission scanning electron microscopy (FESEM). The strongest UV-Vis absorbance spectrum with the optimum absorbance for the ZnO sampel was occurred at the wavelength range of 300 – 360 nm. Meanwhile, for the ZnO sample with addition of 5 mM Ag into dye molecule was occurred at the wavelength range of 440 – 530 nm. FESEM image of the sample shows the as-synthesized ZnO nanorods have hexagonal cross section. I-V characteristics in the light mode was carried out to determine the efficiency of DSSC using a halogen lamp with an intensity of 100 mW/cm 2 . The efficiency of DSSC using ZnO with addition of 5 mM Ag into dye molecule is 0.462%, increases compared to the efficiency of DSSC using ZnO without addition of Ag into dye molecule which only produce 0.45% efficiency. These results indicate that the addition of Ag can increase the efficiency of DSSC.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116538293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.31258/JKFI.18.1.81-87
Zamri Zamri, Saktioto Saktioto
Wi-Fi signal is an electromagnetic wave which in its transmission does not require an intermediary medium used in communication. But the intensity of the signal is influenced by the media it passes through. So in this article we will investigate how the signal propagation in a room is affected by the thermodynamic function. The treatment carried out is to show how the source point, namely the router and the receiver, namely the receiver, where later what is investigated is the trip to the position function, then a measurement will be carried out at that position which depends on changes in temperature and humidity in a closed room which is limited to the study. The source studied in the study was the signal strength intensity on the position, humidity and temperature functions. What is analyzed is the process of wave fluctuation at a certain time with varied data which will later be compared with other experimental results as a comparison, and will also show the signal intensity contour under normal conditions and conditions when the disturbance occurs.
{"title":"INTENSITAS EFEKTIF SINYAL Wi-Fi DALAM RUANGAN TERTUTUP TERHADAP FUNGSI TERMODINAMIK","authors":"Zamri Zamri, Saktioto Saktioto","doi":"10.31258/JKFI.18.1.81-87","DOIUrl":"https://doi.org/10.31258/JKFI.18.1.81-87","url":null,"abstract":"Wi-Fi signal is an electromagnetic wave which in its transmission does not require an intermediary medium used in communication. But the intensity of the signal is influenced by the media it passes through. So in this article we will investigate how the signal propagation in a room is affected by the thermodynamic function. The treatment carried out is to show how the source point, namely the router and the receiver, namely the receiver, where later what is investigated is the trip to the position function, then a measurement will be carried out at that position which depends on changes in temperature and humidity in a closed room which is limited to the study. The source studied in the study was the signal strength intensity on the position, humidity and temperature functions. What is analyzed is the process of wave fluctuation at a certain time with varied data which will later be compared with other experimental results as a comparison, and will also show the signal intensity contour under normal conditions and conditions when the disturbance occurs.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"941 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133614528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.31258/JKFI.18.1.29-34
A. Kurnia, Antonius Surbakti
Determination of magnetic properties and magnetic particle size of sand from Kata Pariaman Beach, West Sumatera have been carried out using Pasco Magnetic Probe and scanning electron microscope (SEM) method. Sand samples that have been dried beforehand are then synthesized using two stage ball milling, namely 40 hours first stage, and second stage as a function of 10, 20, 30, and 40 hours with an iron ball with a diameter of 1.5 cm. The results showed that the value of magnetic susceptibility and mass susceptibility increases as milling time increases. The magnetic and mass susceptibility values obtained included iron oxide particles such as Magnetite Fe 3 O 4 , hematite and maghemit with a value interval of 20,000 to 110,000. The results of the x-ray fluorescence (XRF) test showed the composition of Fe and Ti increased after ball milling, while other elements such as Si decrease. The results of the study particle size by SEM had a small size with increasing ball milling time from 10, 20, 30, and 40 hours.
{"title":"PENENTUAN NILAI SUSEPTIBILITAS DAN UKURAN PARTIKEL MAGNETIK PASIR PATAI KATA PARIAMAN SUMATERA BARAT MENGGUNAKAN METODE BALL MILLING","authors":"A. Kurnia, Antonius Surbakti","doi":"10.31258/JKFI.18.1.29-34","DOIUrl":"https://doi.org/10.31258/JKFI.18.1.29-34","url":null,"abstract":"Determination of magnetic properties and magnetic particle size of sand from Kata Pariaman Beach, West Sumatera have been carried out using Pasco Magnetic Probe and scanning electron microscope (SEM) method. Sand samples that have been dried beforehand are then synthesized using two stage ball milling, namely 40 hours first stage, and second stage as a function of 10, 20, 30, and 40 hours with an iron ball with a diameter of 1.5 cm. The results showed that the value of magnetic susceptibility and mass susceptibility increases as milling time increases. The magnetic and mass susceptibility values obtained included iron oxide particles such as Magnetite Fe 3 O 4 , hematite and maghemit with a value interval of 20,000 to 110,000. The results of the x-ray fluorescence (XRF) test showed the composition of Fe and Ti increased after ball milling, while other elements such as Si decrease. The results of the study particle size by SEM had a small size with increasing ball milling time from 10, 20, 30, and 40 hours.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123323649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vehicle theft rates in Bekasi City are still high. Only about 22.7% cases have been successfully solved. The main problem is hard to track vehicles because too many vehicles in the city of Bekasi. The aims of this research is to design and build a vehicle tracking system using GPS, GSM, Relay, and Arduino Nano. The test was performed by measuring the length of time it takes for GPS device to locks the signal satellite, receive and send a short message to vehicle’s owner. The result was succeeded in designing and building vehicle tracking system using GPS, GSM, and Arduino Nano with a relay as a support to make the vehicle stay in an off condition and can trigger an alarm sound so it can easily to find the location of the vehicle. GPS device has an average time delay of locking a signal for 196 seconds at daylight and 72 seconds at night with accuracy for amount 95.33%. Tracker device has an average time delay for sending message to user at 13.82 seconds for different mobile’s operator and 11.60 seconds for the same mobile’s operator with accuracy for amount 70.73%.
{"title":"RANCANG BANGUN SISTEM PELACAK KENDARAAN MENGGUNAKAN GPS DAN GSM BERBASIS ARDUINO NANO","authors":"Muhammad Fadhurrahman, Elvan Yuniarti, D. Lestari","doi":"10.31258/JKFI.18.1.5-11","DOIUrl":"https://doi.org/10.31258/JKFI.18.1.5-11","url":null,"abstract":"Vehicle theft rates in Bekasi City are still high. Only about 22.7% cases have been successfully solved. The main problem is hard to track vehicles because too many vehicles in the city of Bekasi. The aims of this research is to design and build a vehicle tracking system using GPS, GSM, Relay, and Arduino Nano. The test was performed by measuring the length of time it takes for GPS device to locks the signal satellite, receive and send a short message to vehicle’s owner. The result was succeeded in designing and building vehicle tracking system using GPS, GSM, and Arduino Nano with a relay as a support to make the vehicle stay in an off condition and can trigger an alarm sound so it can easily to find the location of the vehicle. GPS device has an average time delay of locking a signal for 196 seconds at daylight and 72 seconds at night with accuracy for amount 95.33%. Tracker device has an average time delay for sending message to user at 13.82 seconds for different mobile’s operator and 11.60 seconds for the same mobile’s operator with accuracy for amount 70.73%.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130018682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.31258/JKFI.18.1.12-17
Siti Alisna, Salomo Sinuraya
Research on mapping the value of magnetic susceptibility and determination of metal content in peat water in Tuah Madani Village, Tampan District, Pekanbaru has been carried out. Samples were taken with each distance 50 meters to the north and east at 64 different points of 150 ml. The results of the calculation of susceptibility with the Quincke method obtained the lowest susceptibility value of 1.551 × 10-5 and the largest of 1.760 × 10-5. AAS test results and susceptibility calculations indicate that the peat water under study is paramagnetic. Mapping of magnetic susceptibility was carried out using the surfer 11 application while determining the metal content using AAS. The sample density was measured to produce values at intervals of 989,000 kg/m3 to 998,000 kg/m3. AAS test results were carried out on five samples chosen based on the value of magnetic susceptibility with the measured parameters namely Mn, Zn, Cr and Mg. Based on the standard threshold value of heavy metals as pollutants, it is known that the content of Mn, Zn, Cr and Mg. Mg in this peat water sample is still categorized as safe because it has not exceeded the standard threshold so it is suitable to be in the environment and not pollute the environment. Testing the parameters most contained in the sample are Mg.
{"title":"PEMETAAN SUSEPTIBILITAS MAGNETIK DAN PENENTUAN KANDUNGAN LOGAM PADA AIR GAMBUT DI KELURAHAN TUAH MADANI KECAMATAN TAMPAN PEKANBARU","authors":"Siti Alisna, Salomo Sinuraya","doi":"10.31258/JKFI.18.1.12-17","DOIUrl":"https://doi.org/10.31258/JKFI.18.1.12-17","url":null,"abstract":"Research on mapping the value of magnetic susceptibility and determination of metal content in peat water in Tuah Madani Village, Tampan District, Pekanbaru has been carried out. Samples were taken with each distance 50 meters to the north and east at 64 different points of 150 ml. The results of the calculation of susceptibility with the Quincke method obtained the lowest susceptibility value of 1.551 × 10-5 and the largest of 1.760 × 10-5. AAS test results and susceptibility calculations indicate that the peat water under study is paramagnetic. Mapping of magnetic susceptibility was carried out using the surfer 11 application while determining the metal content using AAS. The sample density was measured to produce values at intervals of 989,000 kg/m3 to 998,000 kg/m3. AAS test results were carried out on five samples chosen based on the value of magnetic susceptibility with the measured parameters namely Mn, Zn, Cr and Mg. Based on the standard threshold value of heavy metals as pollutants, it is known that the content of Mn, Zn, Cr and Mg. Mg in this peat water sample is still categorized as safe because it has not exceeded the standard threshold so it is suitable to be in the environment and not pollute the environment. Testing the parameters most contained in the sample are Mg.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"33 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125712456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-30DOI: 10.31258/JKFI.17.3.160-165
Vepy Asyana, A. Arini
This study examines the use of e-modules and PhET simulations as virtual labs in basic physics. The purpose of this research is to optimize the available virtual labs. To facilitate the implementation of practicum, this study uses e-module as a companion material used by users. The research was conducted in two stages. The first is conducting direct trials using PhET simulations and e-modules through Google classroom. The second stage is primary data collection through a questionnaire instrument given to respondents via Google form. The questionnaire instrument was then analyzed by testing the validity, reliability and usability. From the validity and reliability test results obtained 9 question items that have valid and reliable criteria of 0.936 with very high criteria. The usability results show the percentage of respondents to the questions given through the questionnaire dominated by agreeing and strongly agreeing to the four usability factors. This shows that the use of e-module and PhET simulation as virtual lab fulfills the usability element.
{"title":"OPTIMALISASI PENGGUNAAN E-MODUL DAN PHET SIMULATION SEBAGAI VIRTUAL LAB DI MASA PANDEMI COVID-19","authors":"Vepy Asyana, A. Arini","doi":"10.31258/JKFI.17.3.160-165","DOIUrl":"https://doi.org/10.31258/JKFI.17.3.160-165","url":null,"abstract":"This study examines the use of e-modules and PhET simulations as virtual labs in basic physics. The purpose of this research is to optimize the available virtual labs. To facilitate the implementation of practicum, this study uses e-module as a companion material used by users. The research was conducted in two stages. The first is conducting direct trials using PhET simulations and e-modules through Google classroom. The second stage is primary data collection through a questionnaire instrument given to respondents via Google form. The questionnaire instrument was then analyzed by testing the validity, reliability and usability. From the validity and reliability test results obtained 9 question items that have valid and reliable criteria of 0.936 with very high criteria. The usability results show the percentage of respondents to the questions given through the questionnaire dominated by agreeing and strongly agreeing to the four usability factors. This shows that the use of e-module and PhET simulation as virtual lab fulfills the usability element.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115996225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-30DOI: 10.31258/JKFI.17.3.127-133
A. Lestari, Rakhmawati Farma, Vepy Asyana, Awitdrus Awitdrus
Today the need for electrical energy has increased due to the large number of electronic devices that require high electrical energy. To overcome this, a large storage of electrical energy is needed. One of the constituents of energy storage devices that is very important is the electrode. This study used nipah fibers as the basic material for electrodes, because the potential of nipah fruit has not been widely used. The purpose of this study was to determine the effect of KOH activator on the quality of activated carbon from nipah fruit fibers using variations of KOH activator concentrations 0.2 M, 0.3 M, and 0.4 M with sample codes SBN-02, SBN-03, and SBN-04. The manufacture of activated carbon electrodes is carried out through a process of pre-carbonization, chemical activation, carbonization, and physical activation. Characterization of TGA resulted in a resistant temperature of 296°C with a maximum speed of 0.166mg/min. XRD analysis produced a semicrystalline diffraction pattern consisting of two peaks around 24° and 44° at an angle of 2θ indicating the orientation of the hkl (002) and (001) planes.
今天，由于大量的电子设备需要高电能，对电能的需求增加了。为了克服这一点，需要大量的电能存储。储能装置的重要组成部分之一是电极。本研究采用尼帕纤维作为电极的基本材料，因为尼帕果的潜力尚未得到广泛的应用。本研究的目的是确定KOH活化剂对尼帕果纤维活性炭质量的影响，使用KOH活化剂浓度为0.2 M, 0.3 M和0.4 M，样品代码为SBN-02, SBN-03和SBN-04。活性炭电极的制造要经过预炭化、化学活化、炭化、物理活化等过程。TGA表征的结果是耐温度为296°C，最大速度为0.166mg/min。XRD分析得到半晶衍射图，由24°和44°的两个峰组成，以2θ角表示hkl(002)和(001)平面的取向。
{"title":"FABRIKASI DAN KARAKTERISASI ELEKTRODA KARBON DARI BIOMASSA SERABUT BUAH NIPAH DENGAN VARIASI KONSENTRASI AKTIVATOR KOH","authors":"A. Lestari, Rakhmawati Farma, Vepy Asyana, Awitdrus Awitdrus","doi":"10.31258/JKFI.17.3.127-133","DOIUrl":"https://doi.org/10.31258/JKFI.17.3.127-133","url":null,"abstract":"Today the need for electrical energy has increased due to the large number of electronic devices that require high electrical energy. To overcome this, a large storage of electrical energy is needed. One of the constituents of energy storage devices that is very important is the electrode. This study used nipah fibers as the basic material for electrodes, because the potential of nipah fruit has not been widely used. The purpose of this study was to determine the effect of KOH activator on the quality of activated carbon from nipah fruit fibers using variations of KOH activator concentrations 0.2 M, 0.3 M, and 0.4 M with sample codes SBN-02, SBN-03, and SBN-04. The manufacture of activated carbon electrodes is carried out through a process of pre-carbonization, chemical activation, carbonization, and physical activation. Characterization of TGA resulted in a resistant temperature of 296°C with a maximum speed of 0.166mg/min. XRD analysis produced a semicrystalline diffraction pattern consisting of two peaks around 24° and 44° at an angle of 2θ indicating the orientation of the hkl (002) and (001) planes.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114202617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-30DOI: 10.31258/JKFI.17.3.166-171
H. Santoso, M. Hamdi, Saktioto Saktioto
Linac radiotherapy measurentoften experience instability. One of the irradiation errors with Linac can occur because the radiation beam that comes out is not expected properly. Determination of the correction factor and linearity is important to analyze the charge output of the electron energy emitted by Linac's modality to see the stability of the emitted charge. This study uses Electron Linear Accelerator Electron beam daily output data with a 10 cm × 10 cm applicator, 100 cm SSD, 0.125 cc cylindrical ionization detector PTW type 31010 Semiflek and uses a slab solid phantom with energy variations of 6 MeV, 8 MeV, 10 MeV, 12 MeV and 15 MeV. The measurement results are calculated using the IAEA TRS 398 protocol. The result of linearity correction factor of 96.87% which shows the stability value of the electron beam load output is very good, and the results of the correction factor show the enumeration values of each energy 6 MeV, 8 MeV, 10 MeV, 12 MeV and 15 MeV namely 0.030342129 nC, 0.03034 nC, 0.03034 nC, 0.03034 nC and 0.03034 nC values respectively still within the tolerance range of measurement ± 1. The correction factor that has been obtained is used as a parameter in calculating the absorbance dose to the maximum depth.
{"title":"ANALISIS KUALITAS DATA KELUARAN HARIAN ELEKTRON AKSELERATOR LINIER","authors":"H. Santoso, M. Hamdi, Saktioto Saktioto","doi":"10.31258/JKFI.17.3.166-171","DOIUrl":"https://doi.org/10.31258/JKFI.17.3.166-171","url":null,"abstract":"Linac radiotherapy measurentoften experience instability. One of the irradiation errors with Linac can occur because the radiation beam that comes out is not expected properly. Determination of the correction factor and linearity is important to analyze the charge output of the electron energy emitted by Linac's modality to see the stability of the emitted charge. This study uses Electron Linear Accelerator Electron beam daily output data with a 10 cm × 10 cm applicator, 100 cm SSD, 0.125 cc cylindrical ionization detector PTW type 31010 Semiflek and uses a slab solid phantom with energy variations of 6 MeV, 8 MeV, 10 MeV, 12 MeV and 15 MeV. The measurement results are calculated using the IAEA TRS 398 protocol. The result of linearity correction factor of 96.87% which shows the stability value of the electron beam load output is very good, and the results of the correction factor show the enumeration values of each energy 6 MeV, 8 MeV, 10 MeV, 12 MeV and 15 MeV namely 0.030342129 nC, 0.03034 nC, 0.03034 nC, 0.03034 nC and 0.03034 nC values respectively still within the tolerance range of measurement ± 1. The correction factor that has been obtained is used as a parameter in calculating the absorbance dose to the maximum depth.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121466372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-30DOI: 10.31258/JKFI.17.3.114-119
Vischa Vahyra, Salomo Salomo
The research on the magnetic susceptibility, mass susceptibility, and heavy metal content due to automotive contaminants using magnetic susceptibility and X-ray fluorescence has been performed. Samples were taken on three roads in Pekanbaru City, i.e. Jendral Sudirman, Ahmad Yani and Pangeran Hidayat Road. The sample was dried, sifted, separated between magnetic and non-magnetic particles, identified and analyzed. The magnetic induction value of the concentrate as a function of current (200,400,600,800,1000) mA was determined using the Pasco PS-2162 magnetic probe and 2500 winding solenoid. The magnetic induction value also increased when the electrical current was increased. The findings of this analysis showed that concentrates had the magnetic susceptibility values (4888.8–11095.8) × 10-5, while the mass susceptibility of concentrates had values (2284.48–7513.05) × 10-8 m3/kg. The XRF test is done on three concentrates, which are JS 08, AY 01, and PH 13. The XRF test results showed that all the concentrates contained Mn, Ni, Cu, Zn and Pb heavy metals. Based on the threshold value of heavy metals as soil contaminants, it was established that the content of Cu, Zn, and Pb at JS 08, AY 01, and PH13 concentrations exceeded the threshold. Ni material had reached the threshold only to focus on JS 08.
{"title":"ANALISA SUSEPTIBILITAS MAGNETIK DAN KANDUNGAN LOGAM BERAT AKIBAT POLUTAN KENDARAAN BERMOTOR DI BEBERAPA RUAS JALAN KOTA PEKANBARU","authors":"Vischa Vahyra, Salomo Salomo","doi":"10.31258/JKFI.17.3.114-119","DOIUrl":"https://doi.org/10.31258/JKFI.17.3.114-119","url":null,"abstract":"The research on the magnetic susceptibility, mass susceptibility, and heavy metal content due to automotive contaminants using magnetic susceptibility and X-ray fluorescence has been performed. Samples were taken on three roads in Pekanbaru City, i.e. Jendral Sudirman, Ahmad Yani and Pangeran Hidayat Road. The sample was dried, sifted, separated between magnetic and non-magnetic particles, identified and analyzed. The magnetic induction value of the concentrate as a function of current (200,400,600,800,1000) mA was determined using the Pasco PS-2162 magnetic probe and 2500 winding solenoid. The magnetic induction value also increased when the electrical current was increased. The findings of this analysis showed that concentrates had the magnetic susceptibility values (4888.8–11095.8) × 10-5, while the mass susceptibility of concentrates had values (2284.48–7513.05) × 10-8 m3/kg. The XRF test is done on three concentrates, which are JS 08, AY 01, and PH 13. The XRF test results showed that all the concentrates contained Mn, Ni, Cu, Zn and Pb heavy metals. Based on the threshold value of heavy metals as soil contaminants, it was established that the content of Cu, Zn, and Pb at JS 08, AY 01, and PH13 concentrations exceeded the threshold. Ni material had reached the threshold only to focus on JS 08.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134516043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-30DOI: 10.31258/JKFI.17.3.120-126
Mahardika Mega Utama, Wiwis Sasmitaninghidayah
Rice is the staple food of Indonesian. Rice quality is a factor that needs attention because it is related to consumer health.Checking the quality of rice using digital images can be applied because it is non-invasive, so the rice will be more hygienic. The method of utilizing digital images that can be used for checking the quality of rice is LSCI (Laser Speckel Imaging). This method uses a speckle image, that contrast value is analyzedusingImageJ or MATLAB software. To obtain the optimum speckle image contrast value, the arrival angle (laser angle) and capture angle (camera angle) must be adjusted properly. Obtained angle values that produce the optimum speckle image contrast, are at the arrival angle 40 o and capture angle 30 o at 60 o data capture position. The average of the optimum contrast value is 1.2617 a.u. To simplify the speckle image processing, a speckle image contrast analysis application based on the GUI MATLAB was created. Obtained the measurement accuracy from the application is ranged from 99,99 % to 100.00%.
{"title":"PENGARUH VARIASI SUDUT DATANG DAN SUDUT TANGKAP CAHAYA PADA NILAI KONTRAS CITRA SPEKEL BERAS BERBASIS GUI MATLAB","authors":"Mahardika Mega Utama, Wiwis Sasmitaninghidayah","doi":"10.31258/JKFI.17.3.120-126","DOIUrl":"https://doi.org/10.31258/JKFI.17.3.120-126","url":null,"abstract":"Rice is the staple food of Indonesian. Rice quality is a factor that needs attention because it is related to consumer health.Checking the quality of rice using digital images can be applied because it is non-invasive, so the rice will be more hygienic. The method of utilizing digital images that can be used for checking the quality of rice is LSCI (Laser Speckel Imaging). This method uses a speckle image, that contrast value is analyzedusingImageJ or MATLAB software. To obtain the optimum speckle image contrast value, the arrival angle (laser angle) and capture angle (camera angle) must be adjusted properly. Obtained angle values that produce the optimum speckle image contrast, are at the arrival angle 40 o and capture angle 30 o at 60 o data capture position. The average of the optimum contrast value is 1.2617 a.u. To simplify the speckle image processing, a speckle image contrast analysis application based on the GUI MATLAB was created. Obtained the measurement accuracy from the application is ranged from 99,99 % to 100.00%.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117175347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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